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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2008 Sun Microsystems
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef DRIZZLED_FOREIGN_KEY_H
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#define DRIZZLED_FOREIGN_KEY_H
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#include "drizzled/memory/sql_alloc.h"
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#include "drizzled/key.h"
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#include "drizzled/key_part_spec.h"
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#include "drizzled/sql_list.h"
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#include "drizzled/cursor.h" /* for default_key_create_info */
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namespace memory { class Root; }
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class Foreign_key: public Key
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Table_ident *ref_table;
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List<Key_part_spec> ref_columns;
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uint32_t delete_opt, update_opt, match_opt;
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Foreign_key(const LEX_STRING &name_arg,
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List<Key_part_spec> &cols,
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List<Key_part_spec> &ref_cols,
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uint32_t delete_opt_arg,
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uint32_t update_opt_arg,
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uint32_t match_opt_arg) :
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Key(FOREIGN_KEY, name_arg, &default_key_create_info, 0, cols), ref_table(table),
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ref_columns(ref_cols),
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delete_opt(delete_opt_arg),
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update_opt(update_opt_arg),
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match_opt(match_opt_arg)
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* Constructs an (almost) deep copy of this foreign key. Only those
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* elements that are known to never change are not copied.
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* If out of memory, a partial copy is returned and an error is set
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Foreign_key(const Foreign_key &rhs, memory::Root *mem_root);
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* Used to make a clone of this object for ALTER/CREATE TABLE
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* @see comment for Key_part_spec::clone
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virtual Key *clone(memory::Root *mem_root) const
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return new (mem_root) Foreign_key(*this, mem_root);
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/* Used to validate foreign key options */
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bool validate(List<CreateField> &table_fields);
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} /* namespace drizzled */
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#endif /* DRIZZLED_FOREIGN_KEY_H */